Homogenizing-machine.



ARBEB TEIBBIT, OF MEDINA, OHIO.

HOMOGENIZING-MACHINE.

Specification of Letters Patent. Patented Aug. 15, 1911.

Application filed March 27, 1911. Serial No. 617,024.

. known to the trade as homogenizing machines, designed to be used moreespecially by ice cream manufacturers but notlimited to their use, andboth the theory of the machine and the fact or effect of its operationis to break up the cream globules-or sacks in milk and incorporate thesame with the body of the milk in such effective manner that suchglobules or their contents cannot thereafter be recovered or separatedand that the milk and the cream are rendered homogeneous,

or, in other words, are homogenized. This reduces the milk to the mostdesired condition possible for very many uses including the manufactureof ice cream.- The principle or method of treatment by which theseresults are accomplished in milk with its natural cream content, or incream as such, is adapted also to homogenize skimmed milk and freshunsalted butter. the butter being contributed in a melted state andaffording the desired butter fat for the manufacture of an excellentquality of ice cream. By my system of treatment I can as effectuallyintroduce the butter into the milk and make it a part thereof as if itwere present as an original cream content, such as exists in fresh milk.In this process the cream globules present in greater or less quantitiesin fresh milk or cream as it may be ready to go to the churn. aredisintegrated or disrupted and their contents so perfectly diffused withthe body of the milk that they cannot be precipitated or recovered byany means at present known. so far as I am aware. This is accomplishedunder a high pressure which fixes the admixture of the elements andmakes the new combination permanent.

Now referring to the accompanying drawings, Figure 1 is perspective viewof my new and original homogenizing machine, and Fig. 2 is a verticalsectional elevation thereof. Figs. 3 and 4 are cross sections on lines.z*w, and yy, Figs. 1 and 2.

In the drawings B represents a solid steel base having a pump cylinder Cintegral therewith in this instance and an inlet passage 7) through itscenter open to said cylinder and to the mixing cylinder or stand Cthrough which the milk is forced by the pump and in which the first stepin the process occurs by forcing the milk through the disrupting andcommingling medium E in cylinder C. This medium may be of any suitablekind or construction but an arrangement of finely woven wires as shownserves the purposes, the said perforations being angular and not roundin cross section, such as square holes in disks would afford and whichmay be employed. The pump is shown as having a plunger piston P adaptedto be operated by hand lever L in this instance but it may be operatedby power, and fulcrum posts F are shown at the rear, Fig. 1 in suchclose relation to the top of said piston that a great leverage isafforded though with a comparatively short stroke. The said base 13 hasan inlet passage 2 in its bottom opening into passage 1) and a ballvalve 3or its equivalent seats over said inlet. The cylinder or stand Chas a stem screwed into base B and a passage 4 through the same with aball valve 5 seating 3 thereon. Any suitable checkvalve may be used forthis purpose. Another mixing cylinder, C is mounted oncylinder C atright angles thereto near its top and projects rearwardly therefrom ascompared with lever L. As here shown the tube C has an externallythreaded boss 6 at its top and rear and the tube C is removably fixed onsaid boss. Said cylinder C has two diaphraguis, 13 and 15 respectively.with small passages through the same and a cream globule disrupting andmixing medium E is inserted between diaphragm 13 and boss 6. and whichmay be either fine mesh wire as in the case of devices E orothersuflicient means, theessential function of the device being to breakupthe cream globules. specks or floats and mix them with. the milk. Thediaphragm 13 is provided with a passage l l'centrally through the sameand diaphragm 15 has a discharge passage 16, and a mixing effect isobtained in both said passages.

The breaking up device E ispractically a repetition of the device E andis intended to intercept and disrupt such cream globules or floats ashave escaped unbroken through E. Then by forcing the milk through therelatively narrow passage 14 I force admixture ofthe elements whichwould not otherwise ocour. AlLthis is done under or against a. backpressure from spring S and backcheck valve V located in cylinder Coutside the outer diaphragm 15. Both the face of diaphragm l5 andtheface of valve V seated thereon are shown as perfectly flat and smooth soas to perfectly seal the passage 10 when the parts are at rest and anadj usting screw 18 bears against spring S through cap 19 and disk 20 soas to place said spring under any desired tension up to say 5,000 poundsper square inch.

A gage G is shown adapted to record the pressure induced through or byspring S up to the maximum of 5,000, and said gage is supported by apipe 20 from the top of cylinder C, as shown herein, but it might bearranged at some other point in the milk area in cylinders C and O itbeing under stood that a uniform pressure prevails withe in the machinebetween valve 5 and the exhaust valve V after the pump begins to do itswork.

I am of course aware that others have sought to accomplish some of theresults or effects attained by my machine, but their devices stopshortgof the ulterior result I have in view of combining all theelements or constituents of the milk in such Way that the convertedproduct will be homogeneous to disruption.

- pressure check controlling Whatl claim is:

1. A machine for treating milk comprising a suitable base and a pump anda mixing stand on said base and operatively connected through the same,a device in said stand having finely divided openings for disintegratingcream globules forced through the same, a chamber next to the said standhaving a globule disrupting and mixing device and a the outlet from themachine.

globules and a second mixing chamber having a mixing device in its innerend con-' structed to deliver the milk in a single fine stream and apressure regulating device at its outer end.

4. A homogenizing machine for milk having a solid base with a passagethrough same for milk, a pump and a mixing cylinder side by sidetapped-into said passage, :1. second mixing cylinder open to the topportion of said first named c linder having a relatively fine singleoutlet passage in its front end and a mixing device in advance of saidoutlet and provided with a single central outlet and a spring pressedvalve closing said outlet.

v5. In a milk or cream homogenizing machine, a device adapted todisrupt'the cream globules constructed with angular holes of a sizerelatively smaller than said globules and means to force the globulesthrough said holes.-

6. A machine as described having a solid metallic base with a passagethrough the same, a hand pump and a mixing cylinder open to said passageand check valves in said passage to said cylinder, a second cylinder onthe rear of said first named cylinder and a cream disrupting device ineach cylinder and a series of relatively reduced openings 7, 14: and 16successivelyin the cream passage through said cylinder, whereby thecream is crowded into permanent union with the milk.

In testimony whereof I affix my signature in presence of two witnesses.

ARBER TEBBIT.

